Add time:08/07/2019         Source:sciencedirect.com

SummaryJojoba (Simmondsia chinensis L.) single node explants were cultured in a basal medium supplemented with 17.8 μM 6-benzyladenine and four levels of sodium chloride concentration (0, 56.41, 112.82 and 169.23 mM). The free, the soluble conjugated and the insoluble bound forms of polyamines (PAs) (putrescine (Put), spermidine (Spd) and spermine (Spm)) were determined monthly during a 3-month proliferation stage. Free Put and Spd were found in higher levels in the control treatment, while Spm content was higher in the salt treatments. All soluble conjugated PAs were found to be in lower concentrations in explants growing on medium supplemented with salt, while the opposite was true for the insoluble bound PAs. It appeared that certain PAs and PAs forms could play a significant role in the adaptation mechanism of jojoba under saline conditions.

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